贾穆伊（Jamui），是印度比哈尔邦Jamui县的一个城镇。总人口66752（2001年）。

该地2001年总人口66752人，其中男性35553人，女性31199人；0—6岁人口11319人，其中男5829人，女5490人；识字率55.09%，其中男性为64.71%，女性为44.14%。

Jamui is a city and a municipality in Jamui district in the Indian state of Bihar. It is the district headquarters of Jamui district. Jamui was formed as a district on 21 February 1991 as a result of its separation from Munger.

Historical existence of Jamui has been observed from the Period of Mahabharta war. Archaeological and historical evidence shows its close association with Jain tradition for a long past to the present time.